PIC18F4420T-I/PT Microchip Technology, PIC18F4420T-I/PT Datasheet - Page 7

• Manufacturer Part Number: PIC18F4420T-I/PT
• Description: IC,MICROCONTROLLER,8-BIT,PIC CPU,CMOS,TQFP,44PIN,PLASTIC
• Manufacturer: Microchip Technology
• Series: PIC® 18Fr

Specifications of PIC18F4420T-I/PT

• Rohs Compliant: YES
• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: I²C, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, HLVD, POR, PWM, WDT
• Number Of I /o: 36
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 256 x 8
• Ram Size: 768 x 8
• Voltage - Supply (vcc/vdd): 4.2 V ~ 5.5 V
• Data Converters: A/D 13x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

For PIC18FX4X0/X4X3 devices, the code memory
space extends from 000000h to 003FFFh (16 Kbytes)
in two 8-Kbyte blocks. Addresses, 000000h through
0003FFh, however, define a “Boot Block” region that is
treated separately from Block 0. All of these blocks
define code protection boundaries within the code
memory space.
FIGURE 2-6:
 2010 Microchip Technology Inc.
Note:
1FFFFFh
3FFFFFh
000000h
200000h
MEMORY MAP AND THE CODE MEMORY SPACE 
FOR PIC18FX4X0/X4X3 DEVICES
Sizes of memory areas are not to scale.
Unimplemented
Code Memory
Configuration
Read as ‘0’
and ID
Space
PIC18F2XXX/4XXX FAMILY
008000h
TABLE 2-5:
PIC18F2410
PIC18F2420
PIC18F2423
PIC18F2450
PIC18F4410
PIC18F4420
PIC18F4450
Device
(PIC18FX4X0/X4X3)
MEMORY SIZE/
Unimplemented
Reads all ‘0’s
Boot Block
16 Kbytes
DEVICE
Block 0
Block 1
IMPLEMENTATION OF CODE
MEMORY
Code Memory Size (Bytes)
000000h-003FFFh (16K)
000000h
0007FFh
000800h
001FFFh
002000h
003FFFh
004000h
005FFFh
006000h
007FFFh
1FFFFFh
Address
Range
DS39622L-page 7